<SEC-DOCUMENT>0000040211-23-000147-index.html : 20231024
<SEC-HEADER>0000040211-23-000147.hdr.sgml : 20231024
<ACCEPTANCE-DATETIME>20230814101256
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000040211-23-000147
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20230814

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GATX CORP
		CENTRAL INDEX KEY:			0000040211
		STANDARD INDUSTRIAL CLASSIFICATION:	TRANSPORTATION SERVICES [4700]
		IRS NUMBER:				361124040
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606-7147
		BUSINESS PHONE:		3126216200

	MAIL ADDRESS:	
		STREET 1:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606-7147

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GENERAL AMERICAN TRANSPORTATION CORP
		DATE OF NAME CHANGE:	19750722
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
Document 1 - file: filename1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>chart-2caf0b7c10b1468790da.jpg
<DESCRIPTION>QUARTERLY DILUTED EPS (NON-GAAP)
<TEXT>
Document 2 - file: chart-2caf0b7c10b1468790da.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>chart-498a4cbe77b8425185fa.jpg
<DESCRIPTION>QUARTERLY BASIC EPS
<TEXT>
Document 3 - file: chart-498a4cbe77b8425185fa.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>chart-74577af6be2440859d6a.jpg
<DESCRIPTION>QUARTERLY DILUTED EPS
<TEXT>
Document 4 - file: chart-74577af6be2440859d6a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>gatxlogoa03.jpg
<DESCRIPTION>LOGO
<TEXT>
Document 5 - file: gatxlogoa03.jpg

</DOCUMENT>
</SEC-DOCUMENT>